Which method is most suitable to obtain calcium carbonate from a suspension of calcium carbonate in water?Immersive Reader(1 Point)

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

What is the angular momentum of the bar about the axle?

Which two particles are found in the center of an atom